[Age-related immunodeficiencies of the neutrophilic granulocyte system].

Transitory age-associated deficiency of the granulocyte cationic proteins as a cause of a phagocytosis disturbance, loss of the phagocyte cell ability to kill phagocytosed bacteria is established. Quantitative indexes of myeloperoxidase content, elastase and catepsin G in the neutrophil granulocytes of newborns and laboratory animals are determined. Hypothesis is developed on the transitory age-associated immunodeficiencies of the neutrophil granulocyte system as one of the endogenic risk factors in the development of infectious diseases during early postnatal period.